基于Buck DC-AC逆变器的双环控制

针对Buck DC-AC逆变器，提出一种带电流前馈的双环控制器。此控制器设计简单，由于采用全状态反馈的双环控制策略，改善了逆变器系统动态响应性能，提高了稳态性能。此外，电流前馈环的使用提高抗负载扰动的性能。实验结果表明，双环控制中内环扩大逆变器控制系统的带宽，使逆变动态响应加快，同时也有较高的稳态精度，对负载扰动有较高的抑制能力。

Double-Loop Control Research Based on Buck DC-AC Inverters

In this paper, it presents double loop controller with current feed-forward based on Buck DC-AC inverters. It is easy for us to design the controller. Because of using total state feedback, the system dynamic response and steady state performance is improved. Moreover, it reduces the load turbulence action due to current feed-forward. The experiments show that the current loop enlarge the band width of inverters control system, the system dynamic response is accelerated, it has fine steady state precision and less the load turbulence.